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May Z5 1926.

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May 25 1926. 1,585,869

C. H. LASKER PALLET' CLEANER VFiled April 18. 1925 3 Sheets-Sheet 2 May V 25 1926. 1,585,869

C. H. L ASKER PALLET'CLEANER Filed April 18, 1925 3 Sheets-Sheet 3 Patented May 25, 1926.

UNITED STATES CHARLES H. LASKER, OF JOLIE'I, ILLINOIS, .ASSIGNOR COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

VANIA.

PALLET CLEANER.

Application led April 18, 1925. Serial No. 24,058.l

My invention relates to improvements in pallet cleaners and has for its object to provide a means for removing the waste matter adhering to pallets after the baking upon 5 them of the bricks of refractory or other material, in the manufacture of which planesurfaced pallets are employed. This cleansing' is to be accomplished by the rubbing` of the working surfaces of 'two pallets upon each other and the mechanism of my invention is employed to flexibly hold the pallets in position and rub their faces together yieldingly and with both longitudinal and transverse movement. Y

Drawings.

In the drawings- Fig. 1 1s a side elevation of a machine embodying` my invention.

0 Fig. 2 is atop plan view of the same.

Fig. 3 is a transverse vertical sectional view of the same taken on the line 3--3 of Fig. 1.

Fig. 4 is a like view of the clutch mecha- 5 iism employed, taken on the line 4-4 of Fig. 5 is a perspective view of a fragment of one of the pallets whose cleansing is the object of my invention.`

Fig. 6 is an enlarged side elevation of a fragment of the shaft 8 or 9 and its connections.

Fig. 7 is a like view of the eccentric employed in said machine. i l Fig. 8 is a transverse vertical sectional view taken on the line 8-8 of Fig. 1.

Fig. 9 is an enlarged detailed elevation of the hand-lever 15.

i Description.

The pallet A has as its working face the plane surface 6, its sides and ends being provided with the depending flange 7. In use, these pallets are employed in the baking l of refractory brick, an operation requiringwith such tenacity as to require considerable hand labor for removal.

For the purpose of mounting the pallets in position for cleansing by rubbing l. provide pairs of pallet-holders B-B, mounted in opposed position as illustrated in Fig. 3, each of said holders B being of the dimensions necessary to receive and hold one of the pallets A by engagement of the vflange 7 as shown. The outer pallet-holders B are: suitably attached to the rotatable shafts 8 and 9 by means of jaws 10 and 11; the shafts 8 and 9 are journaled in the frame 12 and connected together by means of gear segments 13 and 14,l the shaft 8 being rotated by means of a hand lever 15 to open the jaws 10 and 11, through the connecting gear segments 14 and 13. The jaws 10 and 11 are each flexibly connected to a palletholder B by having a ball-shaped enlargement 33 seated in the cup-shaped extensions 34 of the plates 35 (see Figs. 1 and 6).

The jaws 10 and 11 are integral with collars 36 loosely mountedl on the shaft 8, each of the collars 36 having a projecting lug 37 on its side, the lug 37 engaging and fitting loosely in a slot 38 in the stop-block 39, which stop-block 39 is fixed upon the shaft 8 (see F 6). To keep the lug 37 properly in engagement with the slot 38 I provide a. coiled-spring 40 encircling the shaft 8 and having one end abutting against the collar 36 and the other end secured to the shaft 8 by a pin 41 (see Fig. 6).

The gear segments 13 and 14 are each secured to a weight 42 by a cord 43 as shown in Fig. 8, and the function of that weight 42 is to keep the outer pallet-holder B of each pair normally in closed or operating position.

The hand-lever 15 is provided with a hook 44 pivotally secured to the hand-lever 15 at 45 and operated by the rod 46 and fingerlever 47, the hook 44 engaging with the edge of the frame 12 to hold the pallet-holders B--B in opened or inoperative position (see the dotted-line indications in Fig59).

The inner pair of pallet-holders B`B is mounted upon opposite sides of a suitable shaft 16, which shaft 16 is mounted' at its outer end upon the frame 12 by means of a link 17, the opposite end of shaft 16 being mounted upon the eccentric 1S by means of the eccentric strap 19.

The eccentric 18 is mounted upon the shaft 20, to which power is communicated from the motor 21 by means of the intermesliing gears 22, 23, 24 and 25, the gear 25 revolving freely upon the shaft 20; and the rotation of said eccentric 1S is controlled by means of the clutch system comprising the bifurcated arm 27 fulcrumed to the bracket 28 at 29, the lower end of the arm 27 being pivoted at 30 to the control rod 31, which control rod 31 is operated by means of the hand lever 32, to throw the tongue 49 on the collar 48 (the collar 48 being slidably mounted on the shaft 20) into engagement with the slot 50 in the hub 60 of the gear 25 (see Fig. 4).

The objectionable deposit on the face of the pallet A is of various degrees of hardness and consistency and it is desirable to vary the throw of the eccentric rod 16. This I accomplish by the construction shown in Fig. 7, in which the eccentric 1S has an inner eccentric 51, which inner eccentric 51 is secured to the shaft 20 by the key 53. By means of transverse holes, a longitudinal half of each hole being in the eccentric 1S and the other half in the inner eccentric 51, it is possible to adjust said eccentric 18 and inner eccentric 51 in relation to each other and to locl them in the desired relative positions by means of the locking pin 52 (see Fig. 7).

Mode of operation.

The pallet A being mounted upon the pallet-holders l-B, the faces 6 are held in contact as illustrated in Fig. 3 by means of the operation of the weight 42, and are separated to receive the pallets A by means of the lever 15. By means of the lever 32 the shaft 20 is thrown into operation when the inner pallet-holders BB are reciprocated with a grinding movement by means of the shaft 16, the outer pallet-holders B-B remaining stationary. This operation is continued until all of the foreign matter has been removed from the faces 6 of the pallets A. l/Vhen this cleansing has been accomplished the hand lever 15 is nsed to throw the jaws 10 and 11 outward, when the cleansed pallets A are removed from the holders B.

rlhe flexible mounting of the outer palletholders B produces a yielding contact between the pairs B-B of pallet holders which is highly efficient in cleansing the working faces G of the pallets A; bringing those faces 6 into contact with each other as the caked foreign matter adhering to their surfaces is rubbed away.

The ball-and-socket connection between the jaws 10-11 and the pallet holders B-B, the weighting of the gear segments 1255-14, and the loose mounting of the jaws 10 and 11 upon the shafts which carry them, all contribute to the operation of so rubbing as to first reduce and then eliminate the waste matter whose removal is the object of my invention; finally bringing the faces 6 of each pair of pallets A into contact with each other when fully cleansed.

Various changes of form from the preferred structure which I have illustrated and described may be effected without departure from my invention as defined in the following claims.

Claims.

1. In combination, two opposing holders arranged to receive and hold two pallets; means for holding said pallet-holders with the pallets mounted thereon in contact; and means for imparting movement to one of said pallet-holders.

2. In combination, a series of palletholders arranged in pairs; means for holding said pairs in operative position when carrying pallets; and means embodying an eccentric for imparting movement to one pallet-holder of each pair.

3. In combination, a series of palletholders arranged in pairs; means for holding said pairs in operative position when carrying pallets; and controllable means embodying an eccentric having self-contained means for varying its throw, for imparting movement to one pallet-holder of each pair.

4. In combination, a series of palletholders arranged in pairs; means for yieldingly pressing the opposed faces of each pair of said pallet-holders toward each other to normally hold pallets mounted over said faces in contact; with means for separating the units of each pair from each other.

5. In combination, a series of pallet-holders arranged in pairs; means yieldingly pressing the opposed faces of each pair of said pallet-holders toward each other to normally hold pallets mounted over said faces in contact; with means for separating the units of each pair from each other and locking them in separated position.

6. In a pallet cleaner; a pair of palletholders; an eccentric rod fixed to one holder of -said pair; a shaft carrying the other holder of said pair and having ball-andsoclret connection therewith; all arranged to rnb together the opposed faces of pallets mounted on said holders.

7. In a pallet cleaner; a pair of palletholders, an eccentric rod fixed to one holder of said pair; means for varying the throw of said eccentric rod; a shaft carrying the other holder of sii-id pair and having balland-socket connection therewith; all arranged to rub together the opposed faces of pallets mounted on said holders.'

8,'A pallet cleaner comprising two pairs of pallet-holders; an eccentric rod carrying the inner member of each of said pairs; a iexible hinged mount-ing for the outer member of each pair; and means for Varying the throw of seid eccentric rod; all ar- 10 ranged to rub ltogether the opposed faces of pallets mounted on said holders.

In testimony whereof I have hereunto affixed my signature.

CHARLES H. LASKER. 

